Answer:
Both, you and your friend, are correct.
Step-by-step explanation:
5 P 5 = 5!
A shortcut I learned is that in the permutation equation nPn when n is the same on both sides, it is equal to if you used factorial, n!.
Answer:
Step-by-step explanation:
We know that g = -3 and h = 5
Plugging in the values for g and h you will get:



Final answer is 
15 - 1 = x thats the answer to the problem thats how you can have the answer